pycnonotus sinensis hiding on a branch and fluttering its wings in courtship

adaptation animal avian avifauna bath beak behavior biodiversity bird birdhouse birding birdwatching branch chicks chirp colony conservation crepuscular diurnal ecosystem efforts eggs endangered feeder finch fledglings flight flock flower fluttering foraging green habitat hatchlings hummingbird hunting leaf mating migration nature nest nesting nocturnal ornithologist ornithology passerine perching plant plumage predators prey raptor rookery route sanctuary scavenger seabird shorebird soaring song songbird sparrow species talons territoriality tree tweet twig waterfowl wildlife wing wings